Surveying instrument.



P. TUNES. SURVEYING INSTRUMENT. APPLIOATI'ON'FILED AUG. 2a, 1909. RENEWED mm 2, 1911.

997,82 ?atented Ju1 11,1911.

(QKQQIIIIINIIA W SW8 PAUL JONES, OF'ONTARIO,OREGON,'ASSIG1\TOR OF ONE THIRD TO' A. N. SOLISS, OF

- ONTARIO, OREGON.

SURVEYING INs'rEUMENr.

Specification of Letters Patent.

Patented July 11, 1911.

Application filed August as, 1909, Serial- No. 515,103. Renewed June 2, 1911, Serial No. 630,918.

I To. all whom "it may concern:

Be it known that I, PAUL J owes, a citizen of the United States, residing at Ontario, in the county of Malheur, State of Oregon, have invented certain newand useful Improvements in Surveying Instruments, of which the following is a description, refer-- ence being had to the accompanying drawing,'and tothe letters and figures of reference marked thereon.

The invention relates to new and useful improvements in surveying and engineering instruments, and has for. an object to provide an instrument-for measuring the un known sidesand unknown angles of a triangle; also for determining the area of a triangle.

A further object of the invention is to provide an instrument whereby triangles and triangulation systems may be platted.-

These and other objects will in part be obpart be hereinafter more In the drawings,- Figure 1 is aplan view of an instrument, embodying nay-invention;

' Fig. 2 is a section onlthe line 2-2 of Fig. 1; Fig. 3 is a section on the line 3-3of Fig. 1;

Fig. 4 is a section on the line 44 of Fig. 1; Fig. 5 is a detail, showing the thumb wheel v for adjusting the protractor on the, base member; Fig. 6 is a plan view'of an attachment' for my devicefor measuring an angle;

with a scale, which is member 1 is aslide 3, which is also pro-. 4. The slide 3 is adapted to move freely back and forth onand Fig. 7 is a side view'of'the same. I

j: Incarrying out my invention, I provide a base member 1, which maybe of any desired length, and which is provided at one" edge tenths or hundredths fractional parts;

At one end of the base member 1" is aprotractor 2,'which is rigidly connected to the base member. At the other end of the base vided with a protractor fractional "p screw 26, which is threaded in The clamping member 25, v2, is made in two parts,-and by means of a the base member 1 the slide 3, or the forth on the base slid back and forth on member 1. A second slide moved back and thumb wheel 10 may also be provided for 3 moving the parts, if desired.

clamping screw 11 carried by" the slide 3 is adapted to engage the base member 1 and hold. the same in its adjusted positions. I have provided the slide 3 with a Vernier scale 12, which cooperates with the scale on the base member 1, whereby fine adjustments may b'e'secured.

gage the bar 16. and'adjust the same toward or from the bar'15. Said bars l5and 16 'are recessed on their inner faces to form a guiding groove, which recelves a rib on a sliding plate 20. Said plate 20 is adapted by "this connection to slidebetween the bars-15 and 16. The side member 14 has a scale" oil" in tenths or hundredths rts, in the. samemanner as'the' base member 1. The sliding plate 20 is pro.- vided with a vernier Z scale 21. The side member 14 also has a vernier scale 22, which which is laigpl cooperates with the scale on' the protractor 2. The side member 14 carries a projecting bracket 23, in which is journaled a post 24. preferably laid oli' in [A clamping member 25 carries an adjustingthe post 24. as shown in Fig.

clampingscrew-2Tmay be firmly secured to the outeredge of the protractor. When it is desired toadjust the side piece 14 about its pivotal support, the clamplngscrew 27 is" 4 the base member 1. Said slide has a recess .5finits upper face to "receive-the-base mem-' ber 1; The sides of-the reces'sare rabbeted, so' as to receive projecting ribs on the base "member 1 and retain the same in said recess. 50 The rib 6 on the base member-1 is formed with a seriesof teeth 7. Atoothed wheel 8 is journaled in the slide 3, and isadaptedto. engage the teeth? of the rib 6. Said wheel 8 is .provided with a-thun1bscrew 9, where: '66" by said serrated Wheel may be rotated and released: and said -side, member is moved about its pivot {until the desired adjustment is approxlma'telyreached, 'afterwhich the clamping-screw is tightened to secure the clamping member to the protractor. "Furthenadjustmentl of the side member 14 is. theii secured through the adjusting'screw'26.

A side member 28 is pivotally attached to' thesliding protractor 4,by"' means of the pivotpost. 29. Saidi side member 28 is made in-,twoPartsBO and31, which are secured .116

by a yoke 32 in the same manner as detween the side bars of the side member 31,

and is 'pivotally connected to the sliding plate 21 by a pivot post- 34 (see Fig. 4). The side member 28 is provided with a scale on its lower face, and the sliding plate 33 has a Vernier scale. Said side'member 28 carries a bracket 35. A clamping member 36 is adjustably connected to the protractor 4 by the clamping screw 37. An' adjusting screw 38 connects the clamping member with the bracket 35. The pivot post 34 has a central opening 39. The pivot post of the side bar 15 has acentral opening 40, and the pivotpost 29 of the side member 38, is pro vided with a central opening 41.

In the outer face of the side rail 15 is a dove-tailed groove 42 (see Fig. 4), which is adapted to receive a dovetailed rib 43, car-v ried by a protractor 44. An arm 45 is pivoted to the protractor at 46, and carries projecting studs 47 on its lower face. Said studs 47 are adapted to engage between the side bars and 31- of the side member 28.

When it isdesired to determine the length of two unknown sides of a triangle, having given the thirdside and the. adjacent angles,

- tractor 4.

' on the side member 128,

vThe side member 14 is my improved instrument is operated as follows: The length of the known side is laid .oif on the base member by sliding the protractor 4 by means of the toothed wheels. then adjusted, so as to lay off one oi, the angles on the protractor 2. The side member 28 is then ad, justed to lay off the other angle on the pro- The scale reading on the side mem-:' ber l4 will give one of the unknown sides, and the scale reading on the side member 28, will give the other unknown side The third angle may be read on the protractor 44. Let us suppose it is desired to determine the area of this triangle- The side 28 may be swung by sliding the protractor 4 to a vertical position, and by reading the scale the altitude of the triangle determined, and. having given the altitude and the base, the area of the triangle may be readily computed. When it is desired to plat the triangle,'the triangle is form in the manner above noted, and bymeans of a pin or other suitable instrument, a perforation may be made inthe sheet on which the triangle is to be laid off, by inserting the pin through the opening or aperture in the pivot posts 34, 12 and 29.

While I .have described only one or two methods of using my device, it will be obvious that it may be used in many ways in connection with the measuring or plattingt of triangles and triangulation systems.

Having thus described my IIIVGIltlOD, what I claim as new and desire to secure by Letters Patent, is

plates mounted between 1. The combination of a base member, of a protractor secured at one end of said base member, a side member pivoted to said pro tractor, the pivotal bearing of said side member having an opening formed thereand means for pivotally connecting sai'dside members, the pivotal bearing of said' connecting means'having an openmg formed therethrough.

2. The combination of a base member having a scale formed thereon, a protractor carried by said base member at one end thereof, a second protractor slidingly connected to said base member, side members pivotally connected to each of saidprotractors and comprising spaced bars sliding the spaced bars of the side members, and means for pivotally connecting said sliding plates.

3. The combination of a base member having a scale formed thereon, a protractor secured to said base member, a slide mounted on said base member, a toothed rib carried .by said base member, a toothed wheel carried by said slide for adjusting the same on said base member, a protractor carried by said slide, side members pivoted to said protractors, and means for pivotally connecting said side members.

4. The combination of .a base member having a scale formed thereon, a protractor secured to said base member, a slide mounted on said base member, a toothed rib car ried by said base member, a toothed wheel carried by said slide-for adjusting the same on said base member, a protractor carried by said slide, side members pivoted to said protractors, said side members comprising spaced bars, 'slidlng plates mounted between said spaced bars, and means for pivotally connecting said sliding plates.

5. Thecombination of a having a scale-formed thereon, a pr t-ram tor secured to said base member, a slide mounted on said base member, a toothed rib carried by said base member, a toothed wheel carried by said slide for adjusting the same on said base member, a protractor carriedby said slide, side members pivoted to said protractors, said side members comprising spaced bars, sliding plates tween said spaced bars, means for pi'votally connecting said sliding plates, and means for adjustablysecuring the outer ends of said spaced bars.

6. The combination of protractor connected to one end thereof, a

side member pivoted to said protractor, and

said slde member comprising spaced bars,

. v base member mounted bea base member, a

lit

plate mounted between said spaced bars, a slide mounted on said base member, a protractor carried by said slide, a side member pivoted to said last named protractor and having a scale formed thereon, said last named side-member1comprising' spaced bars, a sliding plate mounted between said spaced bars, means for pivotally connecting the sliding plates carried by the side members, means for adjusting the slide on the base member, and an adjusting screw connected to each protractor and attached to the respective side members for adjusting the side members relative to the protractors.

7. The combination of a base member, a

protractor connected to one end thereof, a

side member pivoted to said protractor, and having a scale formed thereon, said side member comprising spaced bars, a sliding plate mounted between said spaced bars, a slide mounted on said base member, a protractor carried by said slide a side member &

pivoted to said last named protractor and having a sca c formed thereon, said last named side member comprising spaced bars, a sliding plate mounted between said spaced bars, means for pivotally connectthe sliding plates carried by the said members, a rack carried by the base member, a toothed wheel carried by the slide and engaging the rack for adjusting the slide on the base member, adjusting screws for each protractor, means for adjustably connecting said screws to the protractors, said screws being connected to the respective side members for adjusting the same relative to the protractors.

In testimony whereof I afiix my signature, in presence of two Witnesses.

PAUL JONES.

lVitnesses:

EDWARD L. KING, G, W. PLATT. 

